Power company Pacificorp has gone to court to prevent the Interior Department from disclosing how many birds are found dead at its wind-energy turbine sites. AP reporter Dina Cappiello has been writing an investigative series on the birds, including eagles, killed at wind farms in the U.S. The series found that federal regulators have not prosecuted or penalized wind-energy companies when their turbines kill birds and — the government has helped keep the scope of bird mortality secret.

An environmental group is suing the U.S. Fish and Wildlife Service for denying a Freedom of Information Act (FOIA) request for information on the impacts of the proposed Keystone XL pipeline on whooping cranes, piping plovers and other endangered species. Photo: Piping plover/USFWS.